I-eriyali lwangaphandle 3G-modem - sicelo kwiimbangi isixhobo

Wonke umntu oye wafumana 3G-modem, kungekudala ijongene nengxaki reception uphawu kakuhle. Kumgangatho esezantsi kunceda enothi lwangaphandle lwe 3G-modem. ukusetyenziswa kwayo kwandisa kakhulu umgangatho uphawu ezifunyenweyo. Yangaphandle antenna 3G-imodem ivumela izihlandlo eziliqela ukukhawulezisa nokudlulisela ulwazi yokuqala. Yena lwenziwa ngephanyazo. Kulo mzekelo, zombini non-contact. Baya kwakhona ayikhuphi uphawu ukusuka modem kwi-eriyali lwangaphandle vice versa. Oko kukuthi, i-scheme ngokubanzi ngolu hlobo lulandelayo: imfuno enye enothi lwangaphandle 3G-imodem kunye eriyali RF umgangatho lwangaphakathi intambo yafakwa ukuba inomlingani eziphango encinane 2100 MHz. Konke oku zingathengwa kwivenkile ezobuchwepheshe, kodwa ungayenza wena sixhobo sangaphandle.

design elula

enothi lwangaphandle lwe 3G-modem ngezandla zakho - kunzima na. Enye yezinto ezahlukeneyo kule uyilo lwenziwa kwi-Internet kaninzi. Oku eriyali Kharchenko of 3G-modem. Libizwa ngokuba "ezisibhozo" kuba imilo isici. Isiseko ngokuba Kharchenko waveguide, isibhozo efana rhombuses ezimbini, apho umbhali ocetywayo kokufumana amajelo kamabonwakude kuluhlu UHF. Nangona kunjalo, ukusetyenziswa kwayo njenge 3G uphawu umamkeli kufuneka benze utshintsho kwezinye kuyilo. Kuya kunceda ukomeleza umqondiso ukuba oko. Ukuba uphawu GSM ayikho ngokubanzi, kuya kuba kuhle ukuba usebenzise ngobuwena ezahlukeneyo, kwakheka kwi isiseko -eriyali satellite. "Isibhozo 'ukwenza ngayo lobhedu wire 4mm², leyo zingathengwa kuyo nayiphi E-shop. Ephuma kwisamkeli wire loop onke. Oku - iidayimani ezimbini zinamacala 53 mm kunye engile ezimbini 120 ° phezu eziphezulu ecaleni rhombuses. "Abasibhozo ongadibenanga kweli ziko njengoko pullback - umzobo, kukho umoya umsantsa 5 mm, kwaye oku kubalulekile. iphela beesekethe yavalwa ngelotha. sheet aluminium 2 mm ipleyiti elingqingqwa kufuneka zisikwe 140x140 mm, nto leyo eya kwenza ukuba kugqame. Xa iziko emngxunyeni ipleyiti eweva ngenxa intambo kunye ububanzi of 8-10 mm. Circuit shelwe 36 mm ngaphezu kugqame. Waba ndawo ukuba sinxibelelane naye. Ngokuba lo mdlalo senziwe Heating. Bangakwazi zeplastiki. Ngoku ke kufuneka ukuba isigqibo udonga-entabeni indlela iinketho. Uyakwazi ukusebenzisa isibiyeli ukusuka maza. Intambo eriyali soldered. Kucetyiswa ukuba usebenzise intambo yafakwa 75 Ohm. Noko ke, kwathi empirically ukuba xa ulwamkelo yomtshangatshangiso 2100m Hz, engqamana HSDPA umgangatho, uphawu amandla generated yokuba xa ukuxhathisa ngaphezu ohms 50 nangoko ibola. Ke ngoko kuphakanyiswa ukuba usebenzise intambo kunye ukuvimba of ohms 50. Loo wire unakho ngokupheleleyo ezenziwe ngobhedu, kwaye kulula ukuyifakela ngelotha. Isixhobo kufuneka ifakwe ize iankile endaweni. Kwelinye isiphelo intambo luyenziwa matcher. Oku kuya kufuna ngefoyile ye yobhedu. Le mifanekiso zingafumaneka ngokuthi sichitha nesiguquli omdala, okanye uthenga nje ukususela umthengisi. Le mifanekiso yenziwe ityala yinqobo kuye. Elinye icala kwesigubungelo ukuba 45 mm. Case ayihlali ngokuqinileyo umzimba izixhobo zethu 3G.

Kuba ezo zisontiweyo emilukweni ezihamba kufuneka isiqwenga ngefoyile ye ubungakanani 27h76 mm. I-qhina ke soldered kule isiqwengana ngefoyile ye esigquma isigubungelo, kodwa akukho kungafuni kuye, kwaye undoqo ucingo soldered kwi-inshorensi ngokwayo. Kodwa kwakhona akazukuyibamba ngqo umzimba modem. Enyanisweni, i-eriyali lwangaphandle ye 3gG-imodem ilungele ukusebenza. Ngoku kufuneka kuphela ungayiqwalasela ngokucima nje eNtabeni bekhangela basamkele umqondiso.